General Cargo Emissions & Retrofit Radar
Ships ranked by AER (Annual Efficiency Ratio) — grams of CO₂ emitted per tonne of deadweight carried one nautical mile (g CO₂/dwt·nm), the IMO carbon-intensity metric behind the CII rating — from official EU MRV emissions data for reporting year 2025. Lower is greener. Pick a segment and size class to see the greenest vessels first.
CII band distribution
509 at D/E2,735 rated vessels · 271 of the D/E set dock within 12 months
Docking pipeline — D/E vessels per quarter
Windows estimated from the class-expiry docking model, not bookings.
Top eligible retrofit measures for this segment
| Measure | Eligible | CO₂ reduction | Capex band | Payback | Confidence |
|---|---|---|---|---|---|
| Propeller redesign / replacement | 1,462 | 5–10% | €400k–1,200k | — | vendor claim |
| Rotor sails (per unit) | 756 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 756 | route-dependent | €1,000k–2,500k | — | vendor claim |
| Turbocharger cut-out | 652 | 1–3% | €80k–250k | — | vendor claim |
| Bulbous bow reprofiling | 566 | 2–6% | €300k–900k | — | vendor claim |
| Shaft generator / PTO | 97 | 3–6% | €500–1,500/kW | — | vendor claim |
Capex bands are indicative vendor/literature priors. Payback appears once price parameters are configured.
Retrofit opportunity in this segment
Retrofit prospects — worst band first
| Vessel | Band | Age | Drop year |
|---|---|---|---|
| KOKODA CHIEF · <25k | E | 15y | 2026 |
| CLAUDIO CUCCO · <25k | E | 40y | 2026 |
| GINO CUCCO · <25k | E | 39y | 2026 |
| GIUSEPPE CUCCO · <25k | E | 49y | 2026 |
| LADY OF CHICHESTER · <25k | E | 56y | 2026 |
| # | Vessel | Size (DWT) | Built | Carbon intensity — AER (g CO₂/dwt·nm) | Grade |
|---|---|---|---|---|---|
| 1651 |
MARBELLA
IMO 9406958
|
8,546 | 2008 |
16.6
|
D |
| 1652 |
NATALIE
IMO 9361720
|
4,995 | 2006 |
16.6
|
D |
| 1653 |
GUNDEM SERRA
IMO 9280122
|
6,029 | 2004 |
16.6
|
D |
| 1654 |
PARKGRACHT
IMO 9424546
|
20,170 | 2009 |
16.6
|
D |
| 1655 |
ARKLOW VILLA
IMO 9772618
|
5,150 | 2018 |
16.6
|
D |
| 1656 |
BERTHOLD K.
IMO 9374715
|
4,443 | 2008 |
16.6
|
D |
| 1657 |
ALEXANDRA
IMO 9196163
|
8,865 | 2000 |
16.6
|
D |
| 1658 |
JAZZ
IMO 8903026
|
3,806 | 1990 |
16.6
|
D |
| 1659 |
MOSTEIN
IMO 9100176
|
4,836 | 1996 |
16.6
|
D |
| 1660 |
GERMAN SKY
IMO 9125047
|
4,777 | 1996 |
16.7
|
D |
| 1661 |
REGGEDIJK
IMO 9515034
|
4,890 | 2011 |
16.7
|
D |
| 1662 |
BBC RUBY
IMO 9563744
|
14,310 | 2016 |
16.7
|
D |
| 1663 |
BUGOE
IMO 9376775
|
5,484 | 2008 |
16.7
|
D |
| 1664 |
MANISA BALU
IMO 9391036
|
8,450 | 2008 |
16.7
|
D |
| 1665 |
BBC EMERALD
IMO 9504750
|
14,371 | 2013 |
16.7
|
D |
| 1666 |
MAASGRACHT
IMO 9571492
|
12,267 | 2011 |
16.7
|
D |
| 1667 |
LONGVIKING
IMO 9547324
|
6,132 | 2010 |
16.7
|
D |
| 1668 |
BBC LIMA
IMO 9513622
|
7,819 | 2010 |
16.7
|
D |
| 1669 |
LADY JAMILA
IMO 8606109
|
13,500 | 1987 |
16.8
|
D |
| 1670 |
ALTO
IMO 9277333
|
7,701 | 2004 |
16.8
|
D |
| 1671 |
WILSON BORG
IMO 9106924
|
3,931 | 1994 |
16.8
|
D |
| 1672 |
ANMARE
IMO 9434589
|
3,689 | 2009 |
16.8
|
D |
| 1673 |
WILSON NICE
IMO 9430959
|
8,689 | 2010 |
16.8
|
D |
| 1674 |
HERBEIRA
IMO 9439216
|
7,796 | 2008 |
16.8
|
D |
| 1675 |
NAVITA
IMO 8324737
|
5,018 | 1984 |
16.8
|
D |
| 1676 |
STROOMBANK
IMO 9356543
|
4,541 | 2009 |
16.8
|
D |
| 1677 |
ECE
IMO 8911413
|
4,535 | 1991 |
16.8
|
D |
| 1678 |
LINGEDIJK
IMO 9515010
|
4,891 | 2010 |
16.8
|
D |
| 1679 |
COSTAMAR
IMO 9552020
|
5,217 | 2010 |
16.8
|
D |
| 1680 |
ST. PAULI 2
IMO 9166467
|
5,425 | 1999 |
16.8
|
D |
| 1681 |
ARKLOW GLEN
IMO 9874090
|
5,145 | 2023 |
16.9
|
D |
| 1682 |
JOE
IMO 9351153
|
7,750 | 2007 |
16.9
|
D |
| 1683 |
VALERIE
IMO 9374739
|
4,942 | 2012 |
16.9
|
D |
| 1684 |
WILSON BLYTH
IMO 9124419
|
3,713 | 1995 |
16.9
|
D |
| 1685 |
SCOT ISLES
IMO 9728758
|
4,782 | 2021 |
16.9
|
D |
| 1686 |
BREB TRADER
IMO 9369526
|
3,850 | 2007 |
16.9
|
D |
| 1687 |
BURHAN DIZMAN
IMO 9381809
|
7,728 | 2007 |
16.9
|
D |
| 1688 |
NICKI
IMO 9370276
|
3,843 | 2006 |
16.9
|
D |
| 1689 |
BREB CUXHAVEN
IMO 9421142
|
7,815 | 2010 |
16.9
|
D |
| 1690 |
RHONE RIVER
IMO 9368613
|
6,354 | 2007 |
16.9
|
D |
| 1691 |
ANKA SKY
IMO 9145126
|
3,940 | 1997 |
16.9
|
D |
| 1692 |
BERS
IMO 9044188
|
4,237 | 1992 |
16.9
|
D |
| 1693 |
ARKLOW VIKING
IMO 9772606
|
5,150 | 2018 |
16.9
|
D |
| 1694 |
MANISA EMY / LEUVEBORG
IMO 9421063
|
8,656 | 2008 |
16.9
|
D |
| 1695 |
ARKLOW VALLEY
IMO 9772553
|
5,169 | 2016 |
16.9
|
D |
| 1696 |
BBC TOPAZ
IMO 9506734
|
14,288 | 2010 |
16.9
|
D |
| 1697 |
ARCTICA HAV
IMO 8403571
|
2,308 | 1984 |
16.9
|
D |
| 1698 |
OSTRA
IMO 9045742
|
6,584 | 2006 |
16.9
|
D |
| 1699 |
PRIDE
IMO 9252931
|
2,981 | 2002 |
16.9
|
D |
| 1700 |
KRISTA
IMO 9434759
|
7,459 | 2008 |
17.0
|
D |
Which engines power the greenest fleets?
The main engine is the single largest CO₂ source on board — typically well over 80% of a ship's emissions come from propulsion. We aggregated this ranking the other way around: every engine design is scored by the measured carbon intensity of the vessels carrying it, licensee-built units merged under their design brand. The verdict from the 2025 data — modern dual-fuel designs like MAN B&W's ME-GI and WinGD's X-DF families, together with EGR/SCR-abated and ultra-long-stroke G-type engines, consistently power the most emission-friendly ships in service.
AER (Annual Efficiency Ratio) = annual CO₂ emissions ÷ (deadweight × distance sailed), the IMO carbon-intensity metric used for CII ratings. It is built only from measured CO₂, distance and deadweight — not the self-reported cargo transport-work figure, which is unreliable. Implausible outliers (top 2% per segment) are excluded. Grade A–E reflects each vessel's rank within its segment. Source: EMSA THETIS-MRV.